Sildenafil EP Impurity A
Impurity reference standard · Sildenafil
- CAS number
- 1391053-95-4
- Molecular formula
- C23H32N6O4S
- Molecular weight
- 488.60
- Purity
- 95%+
- Appearance
- White to off-white solid
- Storage
- -20±5℃
About Sildenafil EP Impurity A
Sildenafil EP Impurity A is a specified impurity of Sildenafil. It is registered under CAS number 1391053-95-4.
The compound is characterised by its molecular formula C23H32N6O4S and a molecular weight of 488.60, with the two-dimensional structure shown above. Because it shares the Sildenafil scaffold, it is typically used to track process-related and degradation impurities of Sildenafil during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: -20±5℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Sildenafil impurities
The same parent compound, neighbouring impurity numbers.
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